package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * 自定义校验器
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {

    private Set<Integer> set = new HashSet<>();

    /**
     * 初始化方法
     * @param constraintAnnotation
     */
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] vals = constraintAnnotation.vals();
        for (Integer v:vals) {
            set.add(v);
        }
    }

    /**
     * 判断是否校验成功
     * @param val 需要校验的值
     * @param constraintValidatorContext
     * @return
     */
    @Override
    public boolean isValid(Integer val, ConstraintValidatorContext constraintValidatorContext) {
        return set.contains(val);
    }
}
